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The new machine ought to (test) ______ before it is put to use.be tested新机器在使用之前
The new machine ought to (test) ______ before it is put to use.be tested新机器在使用之前
游客
2023-10-09
65
管理
问题
The new machine ought to (test) ______ before it is put to use.
选项
答案
be tested
解析
新机器在使用之前要先做测试,根据句意,这里应该用被动语态。
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